Disk drill.



No. 808 ooo. PATENTED DEC. 19 1905.

T. BRENNAN, JR.

DISK DRILL.

APPLICATION FILED JUNE 5.1905.

"uiaTTn sTATEs THOMAS BRENNAN, JR., OF ST. LOUIS PARK, MINNESOTA,ASSIGNOR TO4 PATENT orrrcn.

THE MONITOR DRILL COMPANY, OF ST. LOUIS PARK, MINNESOTA, A

CORPORATION OF MINNESOTA.

DISK DRILL.

Specification of Letters Patent.

Patented Dec. 19, 1905..

Application led June 5.1905. Serial No. 263,733.

I0 all whom, zit rim/y concern:

Be it known that I, THouAs BRENNAN, Jr., a citizen of the United States,residing at St. Louis Park, in the county of Hennepin and State ofMinnesota. have invented certain new and useful Improvements in DiskDrills; and I do hereby declare the following to be a full, clear, andexact-description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to seeding-machines, and is particularly directedto the improvement of disk drill attachments thereto.

The invention consists of the novel devices and combinations of deviceshereinafter described, and defined in the claims.

In the accompanying drawings, which illustrate my invention, likecharacters indicate like parts throughout the several views.

Figure 1 is a view in side elevation with some parts broken away,showing the several features of my invention applied to the diskattachment of a drill. Fig. 2 is a transverse section taken on the line:c2 rc2 of Fig. 1, and Fig. 3 is a transverse section taken on the linesu of Fig. 1. Fig. @L is a view being taken from the rear of Fig. 1looking forward.

The numeral 1 indicates a seed-bootof usual construction, the same beingrigidly connected to a drag-bar 2 and having laterally-projectingtrunnions 8 extended at an angle to each other and on which thefurrow-opening disks A are journaled in the usual way.

The numeral 5 indicates the rod of a disk raising and loweringdevice,which in practice includes a yielding pressure device. (Not shown.) Thelower end of this bar 5 is pivotally attached to lugs 6 on therearwardlyextended and downwardly-turned web 7, that fits closelybetween the diverging surfaces of the two disks A. On the lower portionof this web 7 is apair of laterally-spaced guide-lugs 8, through whichwork aXially-alined plungers or short bolts 9, having stop-collars 10located between the said lugs 8. The coiled spring 11 surrounds theinner ends of the plungers 9 and reacts against the stop-collars 10thereof with a force tending to push the said collars against theadjacent lugs 8. The

outer ends of the plungers 9 are reduced in diameter to form shouldersand afford trunnions upon which concave-convex scrapers 12 The spring 11yieldare loosely journaled.

ing-ly presses the Scrapers 12 against the inner surfaces of thecorresponding disks 4. These rotary Scrapers are not herein broadlyclaimed, since they are subject-matter of United States Letters PatentNo. 785,865, issued to Spencer E. Davis, of date March 28, 1905. Myimproved scraper-supporting device, however, I believe to be new. Thisscraper-supporting device is of small cost apd may be very quicklyapplied in working position and removed therefrom. It is especiallyadapted for application to rotary scraper-disks that are applied foraction on the inner surfaces of the disks.

The numeral 13 indicates what is sometimes called a press-wheel andsometimes a covering-wheel. This press-wheel is loosely journaled in therear end of a press-bar made up of a pair of laterally-spaced metallicstraps 14, that are pivotally attached at 15 to the upper portion of theseed-boot 1. This presswheel is yieldingly forced into contact with theground by a spring-pressure device of novel construction, and whichdevice is preferably constructed as follows: The numeral- 16 indicates aspacing-sleeve which is placed between the straps 14C, has flangeengagement therewith at its ends, and is rigidly secured thereto by anutted bolt 17. At its intermediate portion the sleeve 16 has arectangular enlargement 16, that is formed with an approximatelyvertical slot, through which works an anchor-bar 18. This anchor-bar isprovided at its lower end with several perforations 18, through any oneof which the bolt 17 is adapted to be passed. The said anchorbar 18 maytherefore be set in different vertical positions or adjustments. Thenumeral 19 indicates a coiled spring which is attached at its upper endto the downturned upper end of the anchor-bar 18 and at its lower end isattached to a lug 20 on the web7 of the boot l. This spring 19, as isevident, yieldingly draws downward on the bars 14, and hence on thepress-wheel 13. The tension of the said spring may, as is evident, bevaried by vertical adjustments of the anchor-bar 18.

The numeral 21 indicates a pin extended through the straps 14 at therear of the boot 1, and which pin engages with the web 7 when the boot 1is raised into an inoperative position, thereby causing the press-wheel13 also to be raised.

What I claim, and desire to secure by Letters Patent of theUnited-States, is as follows:

1. The combination with a seed-boot and a disk journaled thereto, of arotary scraper Working against one face of said disk, and aspring-pressed plunger affording a journal for said scraper,substantially as described.

2. The combination with a seed-boot and a disk journaled thereto, of aconcavo-convex scraper working against one face of said disk, and aspring pressed shouldered plunger mounted for straight -line movementson a part carried by said boot, and acting on said scraper,substantially as described.

3. The combination with a seed-boot and a pair of disks journaledthereto, of a pair of rotary Scrapers working against the inner face ofsaid disks, a pair of aXially-alin'ed plungers mounted on a part carriedby said seed-boot and affording journals for said Scrapers, and a springcompressed between and acting on said plungers, substantially asdescribed.

4. The combination with a seed-boot and a pair of disks journaledthereto, said seed-boot having a rear projection 7 formed withbearing-lugs 8, of plungers 9 mounted in said lugs 8 and provided withcollars 10, a coiled spring 11 surrounding the inner ends of saidplungers, and pressing against the shoulders 10 thereof, aconcavo-convex rotary scraper journaled on the reduced outer ends ofsaid plungers, substantially as described.

5. The combination with a seed-boot and a furrow-opening device appliedthereto, of a press-bar pivoted to said seed-boot, a press- Wheeljournaled in the rear end of said pressbar, an upright anchor-barapplied to the intermediate portion of said press-bar, and a coiledspring connecting the upper end of said anchor-bar to a part rigid onsaid seed-boot, substantially as described.

6. The combination with a seed-boot and a fu rrow-opening device, of apair of laterallyspaced straps 14 pivoted to said seed-boot andaffording a press-bar, a press-wheel journaled in the ends of said bars14, a sleeve 16 interposed between said straps 14 and provided with avertical perforated enlargement 16 and having several perforations atits lower ends, a bolt 17 passed through said straps 14, sleeve 16 andbar 18, and a coiled spring 19 attached to the upper end of said bar 18and to a part rigid on said seed-boot, substantially as described.

In testimony whereofl I affix my signature in presence of two witnesses.i

THOMAS BRENNAN, JR.

Witnesses:

S. E. DAvs, E. R. HAYES.

